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kolezko [41]
3 years ago
5

Name the five cardiac cycle activities starting with excitation and ending with regulation of blood flow and volume.

Biology
1 answer:
stira [4]3 years ago
3 0

Answer:

Explanation:

1) Excitation brings about contraction.

2) Contraction leads to an increase in blood pressure.

3) Changes in blood pressure results in the opening and closing of the heart valves.

4) The opening and closing of heart valves then regulates the flow of blood and it's volume.

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2 years ago
"DNA denatures at a higher temperature than does protein, yet its structure depends on relatively weak hydrogen bonds. Why the d
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The option are not given and the options are:

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The statement is incorrect; it actually takes far more energy to denature proteins than it does to denature DNA.

Answer:

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